public class Adder {
    public static void main(String[] args) {
	int numArgs = args.length;

	//this program requires at least two arguments on the command line
        if (numArgs < 2) {
            System.out.println("This program requires two command-line arguments.");
        } else {
	    int sum = 0;

	    for (int i = 0; i < numArgs; i++) {
                sum += Integer.valueOf(args[i]).intValue();
	    }

	    //print the sum
            System.out.println(sum);
        }
    }
}